Nikon 18-70mm f3.5-4.5G ED-IF is an Auto Focus (AF) Standard Zoom lens with APS-C / DX max sensor coverage. When mounted on a APS-C / DX sensor camera, it will give you an FF equivalent focal range of 27 - 105mm. With a max aperture of f3.5 at 18mm, we can not consider this lens fast on wide end and neither at tele end with its f4.5.
Nikon 18-70mm f3.5-4.5G ED-IF is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.